Process of flaking friable groats.



N. GERL-HOLMEN.

' PROCESS OF FLAKING FRIABLE GROATS.

APPLICATION FILED SEPT. 17. 1913..

1,212,205. Famed Jan. 16,1917.

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, NIELS G ERIL-HOLMEN, F FREDERIKSBERG, NEAR COPENHAGEN, DENMARK, A SSIGNOR T0 KLVER-BYGGRYN-FABRIKKEN DANMARK, LTD 01? COPENHAGEN, DENMARK. Y

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Specification of Letters Patent.

PROCESS or FLAKING FRIABLE eRoATs.

Patented Jan. 16, 1917.

Application filed September 17, 1913. Serial No. 790,172.

To all whom it may concern:

Be it known that I, NIELs GERL-HOLMEN, agent, subject of the King of Denmark, residing at G1. Kongevej 1&9, Frederiksberg, near Copenhagem'Denmark, have invented new and useful Improvements-in Processes of Flaking .Friable Groats, of which the following is a specification.

Several kinds of cereals, for instance oats, containing a considerable quantity of fat, may easily be flattened so as to form coherent flakes, whereas other cereals, for in stance barley, wheat and rice are more friable and ordinarily do not lend themselves to such flaking process without a very considerable portion of the material being transformed into flour. J It has been attempted to remedy this by steaming tlie treatment in the rolling mill; an additional advantage of the steaming is that-it kills all microiirganisms. The various processes designed for this purpose have had in view, heretofore, only the treatment of whole grains and they sufl'er from the drawback that the steaming causes chemical changes, the starch for instance being partly con verted into paste whereby the product is deteriorated considerably, mainly in respect to appearance.

The present invention relates'to a process whereby this drawback is avoided, and it consists in the carefully hulled grains being coarsely ground whereafter the flour and the finest grits are removed by sifting. The remaining product is moistened and slightly heated by being subjected to steaming for a short time, preferably only for a few seconds, and in no instance in such manner chemical condition.

that any chemical change is occasioned. The steam treatment is continued for a period of time of such short duration that the integrity of the starch cells is maintained and the groats retain their original The material under treatment is then rolled, in the known manner, and dried. This product is unaltered except in respect to its shape.

The process is especially suitable for barley but may also be used, with advantage, in case of wheat and rice.

The .steam is presented to the material under treatment by means of s ecial apparatus, one example of which being shown in the accompanying drawing, Figure 1 showing the apparatus in vertical section, Figs. 2 and 3 a manner of execution of the discharge opening, in vertical and horizontal section respectively. 4

In a vertical drum a, closed at both ends,

a vertical shaft 6 revolves, there being fas evenly over the material, and the downwardly directed jets of steam have the ef- V feet that the material will not be lifted up- Ward by the steam, nor will it clog tegether but it will' sink downward steadily and gradually, as fast as the finished material escapes at the bottom.

The discharge opening e is made adjustable as far as the size of the outlet area is concerned, it being thereby possible to adjust the time of treatment.

The discharge opening may suitably be arranged in the. following manner (Figs. 2 and 3): In the vessel as bottom 9, projecting somewhat beyond the sides of the vessel, there is provided a transverse slot 71., andbelow the bottom there is a plate 5 with a similar slot is, the said plate being maintained in contact with the bottom by means of screw-clamps Z. The plate 71 may be rotated around the axis of the drum, and when the slot is is in the position .marked m, the outlet is nearly closed. In

surface, so that the process renders superfiuous the injurious bleaching processes frequently used forthis purpose, for instance fumigation with sulfur.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I- declare that what I claim is 1 The process for flaking friable groats which consists in coarselv grinding the grain and freeing the'same from the finer particles, then subjecting the material under treatment to the action of steam to moisten and slightly heat the same, the steam treatment being continued for a period of time of such short duration that the groats retain their original chemical condition,

treatment to the action of steam for a brief period of time of such duration that the groats retain their original chemical condition, and the integrity of the starch cells is maintained, and then rolling the said material. v

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

NIELS GERL-HOLMEN. Witnesses:

C. Fox MAULE J. LEHMANN. 

